I love that flask has very little dependencies to add other packages like redis or mysql which makes it really easy as you can just use sqlite3 directly with your database without having additional libraries installed! It's also super fast so there are no performance issues at all when using this framework in production environments (at least not yet). The documentation could be better but overall i'm pretty satisfied already how well designed everything works out of box together from logging configuration up until routing rules definition etcetera - especially since most things have their own dedicated section within docs/tutorials explaining them properly. But if something isn't documented enough then usually someone else will post an answer here too soon after :) If we want some new features added quickly they should probably implement those into master branches first before releasing stable versions because otherwise people won’t benefit much due lack of stability / backwards compatibility problems.